As the crescent moon is sighted, marking the end of Ramadan, Muslims all over the world prepare to celebrate Eid al-Fitr. The festival typically lasts for three days and is marked by a variety of traditions and customs that vary from country to country.
Since the dawn of time, man needed tools to measure time and help him in secular and religious matters. Questions like: When do we plant? When do we go to war? When should the tax collector show up? The dates of religious festivals and popular events all require a well-calibrated system and knowledge.